One last pic.

Throttle servo is Hitec HS-81. I used some flying wire straps and bent them into an angle. Then I bolted them to the servo and used small wood screws to mount the servo to my engine mount. Linkage is short and sweet.

I didn't bother with the fiberglass cowl on this plane. Not much left of it after cutting to fit around the TH .75 anyway.

Plane hovers at 1/2 throttle here in Denver at 6000' altitude. I'd think your 50 would do the job at lower elevation.